학술논문
Detection of non-sea salt sulphate aerosol at a remote coastal site in South Africa: A PIXE study
Document Type
Article
Author
Source
Nuclear Instruments and Methods in Physics Research Section B; April 1999, Vol. 150 Issue: 1-4 p332-338, 7p
Subject
Language
ISSN
0168583X
Abstract
An aerosol sampling site based on a single-stage streaker sampler with four-hour time resolution was established in 1993 at Brandt-se-Baai, on the north-western coast of South Africa (31.5°S 18°E, 50 m asl). The site was deployed to monitor the generation of dust from the local mining operations and in part to test the hypothesis of large-scale air mass recirculation over Southern Africa. Streaker samples were analysed by PIXE for the usual crustal derived elements and sulphur. Sulphate aerosols over southern Africa are produced in the atmosphere by oxidation of SO2, from industry, or DMS, from the ocean. Industrial related sulphate plays a key role in tracing long-range transport of anthropogenic pollutants.